Final answer:
Yes, Olaplex No.1 can be added to the toner formula. It helps protect and strengthen the hair during the coloring process.
Step-by-step explanation:
Becky can add Olaplex No.1 to her toner formula. Olaplex No.1 is a bonding agent that helps to protect and strengthen the hair during the coloring process. It can be added to toners to enhance their conditioning and repairing properties.
To use Olaplex No.1 in the toner formula, Becky should mix it with the toner according to the instructions provided by the manufacturer. The recommended processing time for the toner should still be followed, as the Olaplex treatment does not affect the processing time of the toner.